Definitions
There is 1 meaning of the phrase
Gum Up.
Gum Up - as a verb
Stick together as if with gum
Example: "The inside of the pipe has gummed up"
Example Sentences
"If you don't clean your guitar strings regularly, they can gum up with dust and sweat."
"The paint on the walls was so thick that it started to gum up the wallpaper."
"Make sure you don't spill any glue on the table, or it will gum up the surface."
"The cold weather caused the car's fuel line to gum up."
"Mixing different types of paints together can gum up your paintbrush and ruin the colors."